You can also make them with OS Palette Editor. It does load and save JASC and C&C Pals.... (not to mention my JASC to C&C Palette Converter... ahhh man... some people must like the burocratic things...

Hello, I followed these steps as I'm trying to replace the US loading screen (ls800ustates.SHP) by using this same name but I get acid texture. I think that the game isn't grabbing the pal, which I name the same (ls800ustates.PAL).

I placed the pal in expandmd07.mix for it to appear in the SHP Builder > Palette > Custom list (is that the list you refered to "you just put the file in expand to make it appear in the palet list")?

Although when I save with SHP with the right pal and reopen it, I get acid texture again.